Capability matrix

Claude Opus 5 vs GLM 5.3: which ecosystem fits

Claude Opus 5
GLM 5.3
Context window
1,000K
—
Open weights
—
✓
Benchmarks covered
15
13
Blended /1M
$15.00
—

Raw benchmark parity rarely decides the pick — tooling, open weights, and provider reliability usually do.

Claude Opus 5 leads on 12 of 12 shared benchmarks.

DimensionClaude Opus 5GLM 5.3
GPQA Diamond93.4%88.1%
HLE56.3%42%
Terminal-Bench 2.189.1%88.2%
Terminal-Bench 3.043.3%28.3%
Terminal-Bench 4.051.8%37.9%
DeepSWE v1.174%66.9%
ProgramBench37%19%
NL2Repo-Bench75.3%58%
CyberGym—84.5%
ExploitGym22.1%15%
HLE (w/tools)63.6%62.5%
Automation-Bench50.3%48.8%
Agents' Last Exam28.6%28.5%
Chartography (w/tools)84%—
BabyVision (w/tools)94.1%—
ZeroBench-main (w/tools)52%—
Blended price$15.00 /1M—
Full priceInput · Output · Cached input$5.00 · $25.00 · $0.500—
Context window1,000K—

What your usage would cost

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Claude Opus 5
$450/mo
GLM 5.3
—

Estimates use list prices and ignore cached input, batch discounts, and off-peak rates.

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